Jason Markk Repel safely creates a durable, breathable barrier that effectively protects against liquid and dirt. Repel is a water-based formula that is safe to use on most absorbent materials including leather, suede, nubuck, canvas, cotton, nylon, knit, woven, mesh and more. Our non-aerosol Repel is VOC-free and does not contain PFAS, PFOA or PFCs (forever chemicals). The fine mist combined with a continuous spray functionality covers large areas quickly and evenly in all directions. Not just effective for shoes and boots, Jason Markk Repel also protects your hats, bags, purses, apparel, and more. To use, make sure your material is clean and dry prior to application. Hold the bottle upright six to eight inches from the item, and spray evenly covering the entire surface area. Do not oversaturate. Allow material to completely dry before exposing to liquid or dirt. Not recommended for unsealed leather or vegetable tanned leather.